Abstract Involvement of software in teaching is provide a batter support, more clear and visual operation of complex circuits and waveforms to the faculty of power electronics in classroom teaching. The software packages available for simulation of power electronic circuits are MATLAB, PSPICE and PSIM and many more.

Use of the software in classroom teaching is provide an additional support to the faculty and its better then the time consuming black board practice. This paper provides a case study of power electronics circuits in PSIM software.

Different power electronics converters model are prepared on PSIM software and generate simulation waveforms. This paper is helpful for the faculty of electrical engineering to find the applications of PSIM in teaching. At a glance: Figures. • Mehar, Hemant. 'The Case Study of Simulation of Power Converter Circuits Using Psim Software in Teaching.' American Journal of Educational Research 1.4 (2013): 137-142.

The Case Study of Simulation of Power Converter Circuits Using Psim Software in Teaching. American Journal of Educational Research, 1(4), 137-142.

Forward Converter Psim Simulation Software. Abstract Involvement of software in teaching is provide a batter support, more clear.

• Mehar, Hemant. 'The Case Study of Simulation of Power Converter Circuits Using Psim Software in Teaching.' American Journal of Educational Research 1, no.

4 (2013): 137-142. Introduction In the present trends, Power electronics is one of the most important subjects of electrical engineering. Power electronics technology involved various types of converters. These converters are the application of circuit theory and design techniques, the development of analytical tools toward efficient electronic conversion, control, and conditioning of electric power. The typical undergraduate syllabus will have topics like uncontrolled and controlled rectifiers with R, RL loads; choppers; single-phase and 3-phase inverters; AC voltage controllers, etc. A simulation practice is providing a platform the student to work efficiently in the present and future design industry because due to the advanced development in technology, simulation process is very useful. Here the simulation of converters is presented using PSIM software.

PSIM for Simulation The basic PSIM process in represented in the Figure 1.1. A circuit is represented in PSIM in four blocks: power circuit, control circuit, sensors, and switch controllers. The power circuit consists of switching devices, RLC branches, transformers, and coupled inductors. The control circuit is represented in block diagram. Components in s-domain and z domain, logic components (such as logic gates and flip-flops), and non-linear components (such as multipliers and dividers) are used in the control circuit. Sensors are used to measure power circuit quantities and pass them to the control circuit. Gating signal is then generated from the control circuit and sent back to the power circuit through switch controllers to control switches.

Simulation in Power Electronics 3.1. Diode Characteristics Diodes are active devices constructed to allow current to flow in one direction. The diode consists of N-type and P-type materials The N-type material is called the cathode and the P-type material is called the anode. There are two types of biasing that can be applied to a diode. For a diode to be forward biased, a power supply is connected with the positive terminal to the P-type material (anode) and the negative terminal to the N-type material (cathode).

The graph below shows the electrical characteristics of a typical diode. When a small voltage is applied to the diode in the forward direction, current flows easily. For a diode to be reversed biased, the power supply leads are set up with the negative terminal attached to the P-type material and the positive terminal attached to the N-type material. When voltage is applied in the reverse direction through a diode, the diode will have a great resistance to current flow. Different diodes have different characteristics when reverse-biased.

Diode Rectifiers Rectifiers are mainly used in power supplies where an AC signal is to be converted to DC. The DC voltage is obtained by passing the rectifier’s output through a filter to remove the ripple (AC components). There are many possible ways to construct rectifier circuits using diodes.

The three basic types of rectifier circuits are: The Half Wave Rectifier The Full Wave Rectifier The Bridge Rectifier In such diode rectifiers, the power flow can be only from the utility ac side to the dc side. A majority of the power electronics applications use such as switching dc power supplies, ac motor drives, dc servo drives and so on use such uncontrolled rectifiers. In this simulation model capacitor filter are use to filtered the ripple content in the output of the rectifier. Advantages & Limitations The following advantages derived when using PSIM in teaching power electronics courses: 1. It provides better visual operation of power electronics converters.